Apparatus for defiberizing bagasse



March 1l, 1958 l..l FREEMAN 2,825,935

APPARATUS FOR-'DFIBERIZI/NG BAGAss;

' March 11, 1958 l.. FREEMAN APPARATUS FOR DEFIBERIZING BAGAssE 2 Sheets-Sheet 2 Filed Feb. 25, 1953 IN VEN TOR. LEO FREE M AN BW AT TORNE-Y z-,szsgsss t APPARATUS- nonnnrrnnnrznse AGAssE "Crusher-"and PiilverzerCompany,*St.` Louis, 'Mo., a

j This invention relates -.ingeneral "tohc'ertain new and :useful improvements in apparatus for deberizing bagasse.

,outerface' ofthe lend disks 17 by cotter `pins"21. Swingably"mounted"ontlie rods 20 intermediate successive pairs It is the primary object of the presentirivention to prol vvvide means for separating a,pith-containing,ibronsmaterial, such as bagasse,y,into pith andftber `in a` simple, efficient, -and continuous mannerwithout cuttingfup' `the fibers or materially reducing their lengths.

t It is another object'o'f the present invention tofprovide:

` means for separating the fibers from-the pith'inbag'asse or similar 'iibrous mass which comprises' Vthe step" of subjecting the bagasse to a water spray wherebythe pith is removed efficiently and the bers are carried.' along by the spr-ay 'for ultimate collection.

, It: is an additional'object of thepresentinvention'to kprovide" `a4 detiberizing machine of the type stated'iintegrally containing 1 a separator* chamber "longitudinally 'disposed abovea pith-receivingcompartment andia 'tiberreceiving compartment.

It-isl a further object oft the presentinvention tof-'provide ua" detiberizing-machine ofvtheA type stated including "a "longitudinal chamber and means associated therewithfor r` adjustably constri'cting the sizeof such chamber from one end to "the'other to compensateforreduction in volume ofithematerial being processed as itpassesfthroughthe 't longitudinaln chamber.

With the above `and other: objects-fin view; myinvention resides -in the novel features of form,constr`uction, ,-Larrangement, ^and combination .of parts :presently -de- `scribed andpointed out in ithe claims.`

In the accompanying drawings .(two\sheet`s) Figure' l ismaverticall sectional viewoffa" deberizing frnachine'constructed` in accordance Withrzand embodying n thea .presentI invention; and

y Figures I -2 A,and '"3 1 are transverse lsectional :views'ttaken :alongflines 2472 :ands 3 3,` respectively of Figure '71,.

vReferring nowsin'- more-detail and' by referencer achar- .tacterst to-the :.drawings,A which` illustrate la preferred em- E .bodiment cof. ,theft ,presentinventiont- A '1 designates; 3a de- .,tiberizing machine comprising ,t a yrectangular casing I or housing shell l having side walls ,2, 2', and end walls 3,132 ySuitably4 ,secured,as byfwelding; to the outwardly gpresentednfaces of Vthe endwalls3, 3', adjacent their -lowerfmargins arevangle sections 4,4', respectively,the

lateral -anges :of `which l,are leacl'i-provided witha plu# ralityfof spacedfapertures 5,` 5', respectively;y fort-receivinggla'g screws s whereby/,the machine:v A., may be. maintained vrigidly. upon .beamsV or other supportingsurface` Erovided Within the,.casing,1-is'ajpartition plate 6 Veittending transversely ,thereacross .tin t .parallel .relation Ato theendwalls 3,13',beingJ spaced a relatively Yshort disttance.. frommthe ,end-wall A3', whereby the `casing )1 is ',"diyided into largerandsmall compartments 7, 8f

Centrally providedin the ,uppertmargins of fthe end walls 3, 3,Vand thepartition plate 6 arealigned recesses i 9,^9"';,10," respectively," through Awhich longitudinally exrtendsa shaftlL-the vends of 'which project outwardly beyond* th'endwalls, i3",4 and 4aresupported by bearings are straight-ended and the remaining sets ofhammers 22 A`with *an-outwardly extending pipe'l'lil' `feed device' (not shown).`

2,825,935 Patented Mar. 11, 1958 iuponlhorizontal :cross plates 13,A 13',Vrespectively, which are, inf;turn, suppo1=tedfby brackets 14 weldedt or otherwisewsuitablyfsecured, to the casing 1. Adjacenteach of its-extreme end portions, theshaft v11is provided with key-ways", 15 for operable engagement with a conventional type prime mover (notshown).

the rotor disks 17 vare provided with four equallyspac'ed apertures" 191a1ign'ed for receiving `longitudinally extending rods 20r'which are secured at their ends against'the `of 'the rotor ldisks 17 is a plurality of hammer members v22. *Tliers't-threesets' of hammers' 22 from the left end offtlleUmachinefA' (reference-being'made toFigure 1) aretwisted-at their outer ends.`

"AD'isposed :abouti the lower portion of thehammer's 22 isafsemi-cylindrical' foraminous screer1`23 which isspaced andthe partitionpl'ate v6.r At its upper marginsfthe screen .23:is-1secured tri-longitudinally extending angle members 24524.', which-tare secured at their ends -to the end -wall Mountedv upon the shaft 11Y Within lthe compartment2 8 tendin-g-Earrns` 27 and a v'campani-onf mernberiv 128 `provided with? relatively short laterally; extending iiangesf29 suitably aperturedwior-` receivingrbolts :Ozforsecurement; :to-,1 the 29 adjacent theinner portions of=thefarms:.-27 (Figure-5.).

Welded or 'otherwise suitably; securedr along; thexupp'er margins y ofthe side- Nvallsl, f2', and end Jwalls A3, 3.',2 are :outwardly projecting. flange members? 31,E each having-fa plurality ,ot-spaced apertures H32 for receivngbolts z33 which extend 1through registering v-aperture's 34v in: afcorresponding lateral flange. 35=integal1y formed onacover or 1 housing .2356 having rintegral p AendV walls 37,` 137'-, land upwardly and inwardly .extending .side portions'. -38 $8'. ThesideV portion 38' is curved inwardly,v as-.1ati3r9,iand thence outwardly to, provide ahumped portionforlongitudinal topchamber 40,Whichis disposed abovefthezouter limits of the peripheral arc `of thefhamrners 22,.and, interiorly provides a tube-like separator chamber 41in elevated relation to, and communicating fwithpthe'cmpartments 7,y 8. The end walls, 37,L 37'," are provided v co=operation with the recesses 9, 9'," in'the end walls3ffy3',

` disposed upon 'theshaft' 11 an ,annular seal lor packing ring 43 maintained in position b y retainer .members'l suitably `secured to the 'casing 1 and the cover or'hosing 36 by bolts 45. n

' Provided in the upper portion `of the end'wall'37rof the cover'for-housing 36` is anenla'rgedapeiture 46fpr'o'vidd e fitting' '47 integrally *formed in "said cover or :housing` 36, said' 'lifting '47'y e'iiig suitable connection to a conventi-onalftype 'offpressjie- Also provided in the end "wall `37" adjacent 'tothe upper portionoffthe'aperture'isfa t hinge-member `49 for r-ockably'supportinga 4st'i'rn'e'what T henri-cylindrical' throttling *plate 50 'Y which' oo riforrns 'in vtransver's'e cross-sectronal shaperto *theMcros's-,sec al lcontour foffthe longitudinal" top-'chamberftt i*and Vis,vv prolar chamber over and above Avided at its rear end with a ball-socket tting 51 for selfseated engagement with the ball-end 52 of a depending `adjustment screw 53 threadedly mounted in and projecting upwardly through the vlongitudinal top-chamber 40.

",As will be seen by reference to Figure 1, `the Vthrottling plate 50 is approximately of the same length as the topchamber 40 and is similarly cut back or relieved along its w forward surface margins, as at 54, for clearance with respect to the end wall 37. The adjustment screw 53 is conventionally provided at its upper end with a suitable handle 55 and the top-chamber 40Tof the housing 36 is conventionally provided with a ring winch cable hook or' other similar facilitate removal when it is necessary vrepair the defberizing machine A.

In operation, bagasse or the pulpyfibrous mass is to clean, adjust, or

pumped under pressure through the litting 47 into the. separator chamber 41 in large volume so as, in elect, to

choke feed the machine through its feed pressure water, be carried through A. The incoming bagasse will, and the driving pressure of the the separator chamber 41. As

, the bagasse or pulpy mass moves along, the pith readily absorbs substantial quantities of water, thereby rapidly increasing its density so that this added weight will cause it to drop downwardly into the chamber 7, wherein it is subjected to a beating action lby the hammers 22 and then descends through the screen 23 into any suitable collecting sump (not shown). With the removal of the pith, as so described, the librous portion of the bagasse is moved along above the hammers 22 and thus prevented from being damaged thereby. The lbrous material will,

56 for receiving a 7 lifting element tov upon reaching the opposite end of the separator chamber 41-, drop downwardly through the compartment 8 for ultimate collection in any suitable container. The agitator 25 serves merely to assist the downward descent of vthe fibrous material and prevent any undue clogging or damming within the compartment 8. As the stream of bagasse moves along and through the longitudinal topchamber 40 formed above the hammers 22 by the housing 36, it is necessary that a substantially uniform back pressure be maintained upon the material and that the loss of volume due to accomplished by threading the screw 53 up or down as may be required to adjust the angularity of the throttling plate 50 which progressively constricts the longitudinal top-chamber 40 to offset the reduction in volume resulting from pith removal and insure that a substantially uniform nature and principle of my invention. Having thus described my invention, desire to secure by Letters Patent is: v

1. A deflberizing machine comprising a compartmented casing, having compartments arranged in side-by-side relawhat I claim and tion, a cover member disposed closurewise upon said casing, said cover member being enlarged to form a tubusaid compartments and being provided over one compartment with a bagasse-receiving aperture, another of said compartments having an outlet arcuate plate hingedly mounted adjacent the bagasse-receiving mers operatively mounted such a manner that the outermost peripheral portions of pith removal be compensated. This is the hammers will describe a hammer circle which is spaced from the arcuate plate, and means for adjusting the position of said plate angularly with respect to the longitudinal axis of said chamber for choking down the space above the hammer circle and thereby controlling the ow of material from the `bagasse-receiving aperture to the outlet aperture.

2. A detiberizing machine comprising a compartmented casing having .compartments arranged in side-by-side relation, rotary hammers disposed in said casing, a cover member of approximately hemi-cylindrical shape disposed closurewise upon said casing over and above the hammers in the provision of an elongated tubular chamber and being provided over one compartment with a bagassereceiving aperture, another of said compartments having an outlet aperture and an elongated arcuate plate hingedly mounted in the tubular chamber adjacent the bagassereceiving aperture and extending lengthwise along the top of the tubular chamber toward the outlet aperture, and means for adjusting the position of said plate angularly with respect to theplongitudinal axis of said chamber for choking down the space above the hammer circle and thereby controlling the flow of material from the bagassereceiving aperture to the outlet aperture.

3. A deiberizing machine comprising a compartmented casing having compartments arranged in side-by-side relation, a cover member disposed closurewise upon said casing, said cover member being shaped to form an elongated tubular chamber over and above said compartments and being provided over one compartment with a bagassereceiving aperture, another of said compartments having an outlet aperture, a substantially hemi-cylindrical plate having its longitudinal axis extending generally lengthwise of the tubular chamber, said plate being hingedly mounted in the tubular chamber adjacent the bagassereceiving aperture and extending lengthwise along the top of the tubular chamber toward the outlet aperture, rotary hammers operatively mounted in one of said compartments in such a manner that the outermost peripheral portions of the hammers will describe a hammer circle which is spaced from the arcuate plate, and means for adjusting the position of said plate angularly with respect to the longitudinal axis of said chamber for choking down the space above the hammer circle and thereby controlling the ilow of material from the bagasse-receiving aperture to the outlet aperture.

4. A deiberizing machine comprising a casing having first and second compartments arranged in side-byside relation, a shaft extending through said casing, a beater means mountedy upon said shaft within said rst c0111- posed closurewise upon said casing, said cover member being shaped to form an elongated tubular chamber over and outlet aperture. 5 A deberizing'machine comprising a hammer cage having spaced parallel end walls and a rotary shaft extending lengthwisev through the hammer cage between said end walls, said cage being subdivided longitudinally of the shaft into first and second compartments, said second compartment having an outlet, hammers operatively mounted on that portion of the shaft which is located in the iirst compartment, a cover member disposed closurewise upon said cage, a feed-pipe opening into the cover member through one of said end walls and above the first compartment and above the hammer circle, said cover member being spaced upwardly from the upper portion of the hammer circle in the provision of a tubular chamber extending in parallel relation to the shaft and in elevated relation to said iirst and second compartments, and a plate hingedly mounted on the cover adjacent the feed-pipe and extending lengthwise along the top of said tubular chamber, said plate being adjustable toward the hammer circle for adjustably choking down the space thereover.

6. A deiiberizing machine comprising a hammer cage having spaced parallel end walls and a rotary shaft extending lengthwise through the hammer cage between said end walls, said cage being subdivided longitudinally of the shaft into first and -second compartments, said second compartment having an outlet, hammers operatively mounted on that portion of the shaft which is located in the rst compartment, a cover member disposed closurewise upon said cage, a feed-pipe opening into the cover member through one of said end walls and above the Iirst compartment and above the hammer circle, said cover member being spaced upwardly from the upper portion of the hammer circle in the provision of a tubular chamber extending in parallel relation to the shaft and in elevated relation to said rst and second compartments, a plate hingedly mounted on the cover adjacent to the feed-pipe and extending lengthwise along the top of the tubular chamber, and means operatively associated with the plate for swinging the plate angularly downwardly toward the hammer circle, whereby to choke down the space over the hammer circle in gradually increasing degree from the feed-pipe to the second compartment.

7. A deberizing machine comprising a hammer cage having spaced parallel end walls and a rotary shaft extending lengthwise through the hammer cage between said end walls, said cage being subdivided longitudinally of the shaft into first and second compartments, said second compartment having an outlet, hammers operatively mounted on that portion of the shaft which is located in the rst compartment, a cover member disposed closurewise upon said cage, a feed-pipe opening into the cover member through one of said end walls and above the first compartment and above the hammer circle, said cover member being spaced upwardly from the upper portion of the hammer circle in the provision of a tubular chamber extending in parallel relation to the shaft and in elevated relation to said first and second compartments, a transversely curved plate hingedly mounted on the cover adjacent to the feed-pipe and extending lengthwise along the top of the tubular chamber, and means operatively associated with the plate for swinging the plate angularly downwardly toward the hammer circle, whereby to choke down the space over the hammer circle in gradually increasing degree from the feed-pipe to the second compartment.

References Cited in the tile of this patent UNITED STATES PATENTS 1,884,381 Thibeau Oct. 25, 1932 1,975,406 Reschke Oct. 2, 1934 2,001,351 Nuttleman May 14, 1935 2,609,153 Moore Sept. 2, 1952 2,729,858 Horton et al Ian. l0, 1956 

